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How many grams of formic acid, HCOOH, must be added to 0.240 L of 0.110 M sodium formate, HCOONa, to yield a buffer solution with a pH of 3.50? Assume no volume change. Ka of HCOOH = 5.0 10-4
What volume of 0.1066 M Na2S2O solution would be requried to react with 24.32 mL
How many grams of methanol must be added to 7.50kg of water to lower its freezing point to -15.0^circ C? For each mole of solute, the freezing point of 1 {rm kg} of water is lowered 1.86 ^circ {rm C}
determine the kinetic energy of the emitted electrons when cesium is exposed to uv rays of frequency 1.3 x 1015 hz?
What is the maximum mass, in gram, of Fe3O4, that can be produced from this reaction? B)If 3.26 g of Fe3O4 are actually made, what is the percent yield of this process
Calculate the equilibrium constant Kp for the reaction, {rm SO_2 (g) + 2 H_2S (g) rightleftharpoons 3 S(s) + 2 H_2O(g)} at a temperature of 298 rm K
a voltaic cell employs the following redox reactionsn2aq mns--gt sns mn2aqcalculate the cell potential at 25 under
How many grams of Fe2O3(s) are produced from 500.0 g of FeS2(s) and 400.0 g of oxygen gas?
Assume equal concentration rank these solution by PH : HBrO(aq), Sr(OH)2 (aq)
What mass of zinc in grams is required to produce 3.2L of H2 (g) from the following reaction at 78 degrees celcius and 790mmHg? Please explain
For the molecular fragments given below indicate the multiplicity and relative intensities of the peaks that would be produced by the bold-faced hydrogen atoms in a 1H nmr spectrum
The CaC2O4.H2O precipitate is not completly air-dried when its mass is deteremined. Will the reported mass of the limiting reactant in the original salt mixture be reported too high or too low? Explain.
Part A. At 25°C, another student has the following data for the aluminum cylinder. The uncertainty in mA, mB, and mcyl is 0.001 g.
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